We thought Plus Berlin was great - it was really clean, and the staff were friendly and helpful. Although there were many people staying, it never felt crowded as it was so spacious. We liked the art that was everywhere on the walls, and in general the way the hotel had been designed and decorated. The rooms were very comfortable, and we enjoyed a swim in the pool - also very clean. It felt very relaxed too - there weren't loads of signs telling you not to do this or that. The breakfast was really good and we enjoyed just sitting talking and drinking coffee until about 11am, and no member of staff ever made us feel we should hurry up. We loved the pet rabbits who seemed to have a nice life on the grassy courtyard with lots of space! The location was important to us, and the hotel was so near the U-Bahn and the S-Bahn it made getting around very easy.